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Date: Fri, 25 Mar 2011 14:47:05 +0000 (UTC)
From: "Rick Curtis (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
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 <1757257376.11369.1301064425783.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Created] (OPENJPA-1965) ClassCastException when using JAXB
 and MetaModel annotation processor
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ClassCastException when using JAXB and MetaModel annotation processor
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                 Key: OPENJPA-1965
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1965
             Project: OpenJPA
          Issue Type: Bug
          Components: tooling
    Affects Versions: 2.1.0, 2.0.0, 2.2.0
            Reporter: Rick Curtis
            Assignee: Rick Curtis
             Fix For: 2.1.1, 2.2.0


This is a problem that was reported by Marc Logemann on the users mailing list. Details from the email exchange:
-----
....
So i see a lot of metamodel classes got generated but during this process i got this:

   [javac] An annotation processor threw an uncaught exception.
   [javac] Consult the following stack trace for details.
   [javac] java.lang.ClassCastException: com.sun.tools.javac.code.Symbol$PackageSymbol cannot be cast to javax.lang.model.element.TypeElement
   [javac]     at org.apache.openjpa.persistence.meta.AnnotationProcessor6.process(AnnotationProcessor6.java:207)
   [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:625)
   [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:554)
   [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:699)
   [javac]     at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:981)
   [javac]     at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:727)
   [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:353)
   [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:279)
   [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:270)
   [javac]     at com.sun.tools.javac.Main.compile(Main.java:69)
   [javac]     at com.sun.tools.javac.Main.main(Main.java:54)
....
-----

Details on how to recreate :
....
Hi,

this is nearly impossible because its not an Entity which makes the problem here. Its a package. I have no idea how to unit test that. Perhaps you can try creating
a simple package with JAXB generated classes in it and try to reproduce:

1) create a very simple XSD file
2) run the JAXB compiler via ANT (then you should have some classes in myweirdpackage)

   <target name="JAXBCompiling" description="Compile main source tree java files">
       <taskdef name="xjc" classname="com.sun.tools.xjc.XJC2Task" classpathref="toolingclasspath"/>

       <xjc schema="my.xsd" destdir="${src.dir}"  package="domain.myweirdpackage"/>
 </target>

3) put at least one Entity in domain package (parent of myweirdpackage)
4) run the MetaModel compiling step

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